Features: Working voltage 3.3-12V, current MAX6mA. Open source, support customized data preprocessing service. This openlog is an open source data logger- that works over a simple serial connection and supports microsd- cards up to 64gb. Openlog serial data logger- data recorder ttl level storage. All data logged- by the openlog is stored on the microsd- card that involve the features of 64mb to 64gb capacity and fat16 or fat32 file type. Specifications: Material: ABS VCC Input: 3.3V-12V (Recommended 3.3V-5V) Log to low-cost microSD- FAT16/32 cards up to 64GB Simple command interface Configurable baud rates (up to 115200bps) Preprogrammed bootloader Four SPI pogo- pins Two LEDs indicate writing status 2mA idle, 6mA at maximum recording rate Package Includes: 1X Data Logger- note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.